Axe

Inactive Publication Date: 2012-02-16
KARNA HEIKKI
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0025]One further idea of the invention is that the axe fits to a small place so that it can be easily taken along when for example going for a trek and for this purpose it is convenient that the axe's second stop element is arranged to have a hinge so that the second stop element is hinged with a turning joint. When having a turning joint in the second stop element the axe needs smaller spa

Problems solved by technology

A problem with such a conventional axe is that the only way to affect the splitting force is to make the wedge wider.
It is, however, difficult for a blade with a wide wedge to penetrate into the wood.
In contrast, a blade with a sharp wedge easily penetrates into the wood but has poor splitting force.
In addition, a disadvantageous characteristic of the conventional axes is that such an axe gets easily stuck in the wood because the axe blade penetrates directly into the wood.
A problem with this known arrangement is that when the blade hits the wood and the cutting edge of the blade has partly penetrated into the wood and some of the impact force of the blade is converted into a rotational motion, this rotational motion is uncontroll

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Axe
  • Axe
  • Axe

Examples

Experimental program
Comparison scheme
Effect test

Example

[0030]The FIG. 1 shows an axe 1 that comprises a handle 2 which the handle 2 is attached to the blade 3 with a mounting arrangement 4. The mounting arrangement 4 may also be other than shown in the figure, for example a bolt or several bolts going through the handle and the blade. In this embodiment of the invention the mounting arrangement 4 is a U-bolt. In this preferred embodiment of the invention the portion of the handle 5 attached to the blade 3 is of a different shape than the rest of the handle 2. The blade 3 has a cutting edge 6, a first stop element 7 and a second stop element (not shown in the figure). The portion of the handle 5 which is of a different shape than the rest of the handle is preferably covered with a plastic material or having a plastic sleeve which protects the handle from wearing. The sleeve or the covering may preferably extend to the lower part of the handle too so that all the parts that may hit the wood when missing the target while splitting the wood...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

An axe comprising a blade (3) provided with a cutting edge (6) at one end, and a handle (2), and in which the centre of gravity of the axe is located at a distance from the cutting edge (6) of the axe and lies in a centre-of-gravity plane (C) of the axe located at a distance from a blade plane (B) of the axe parallel with both the centre-of-gravity plane (C) and a normal working motion plane (W) of the axe, and in which the cutting edge (6) of the blade and the centre of gravity of the axe are arranged to cooperate when the blade (3) hits wood and the cutting edge (6) of the blade partly penetrates into the wood such that at least some of the impact force of the blade (3) is converted into a rotational motion and a motion of the blade (3) in a curvilinear trajectory, the blade (3) is attached to the handle (2) so that the handle (2) is uncircled by the blade (3).

Description

FIELD OF THE INVENTION[0001]The invention relates to an axe as defined in the preamble of the independent claim 1.[0002]The invention relates to an axe comprising a blade provided with a cutting edge at one end, and a handle, whereby the centre of gravity of the axe is located at a distance from the cutting edge of the axe and lies in a centre-of-gravity plane of the axe located at a distance from a blade plane of the axe parallel with both the centre-of-gravity plane and a normal working motion plane of the axe, whereby the cutting edge of the blade and the centre of gravity of the axe are arranged to cooperate when the blade hits wood and the cutting edge of the blade partly penetrates into the wood such that at least some of the impact force of the blade is converted into a rotational motion and a motion of the blade in a curvilinear trajectory.[0003]A normal working motion plane of an axe is herein used to refer to a plane in which the axe is moved while splitting wood.[0004]A c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B26B23/00B21H7/06
CPCB25G3/02B26B23/00
Inventor KARNA, HEIKKI
Owner KARNA HEIKKI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap